Dream about killing a brown spider points to inexperience. Perhaps someone or some situation calls for your help. There is something that you need to take-ou or take-away from your life. It is a harbinger for your own sense of spirituality. You need to show more restraint in some situation.
Killing a brown spider dream indicates your ability to manipulate some situation or relationship. You are putting your childish ways behind you. You need to show more compassion in a situation. This dream is an omen for disappointments in achieving your goals and attaining your highest desires. You may be experiencing some chaos and unpredictable circumstances in your life.
If you dreamt about killing a brown spider:
The celestial alignment may encourage you to speak more rashly than perhaps you need to concerning an issue between you and your partner (current or prospective). If you are feeling irritable, it may be best to weigh your words before actually coming out with them, as you may inadvertently hurt the one you love. Just be aware that you could start an argument when, in all honesty, it is really not warranted.